. ___________ the letter, he went out to post it.
| A．Writing | B．Being writing | C．Having written | D．Written |
The flag looks especially beautiful _______________ the blue sky.
| A．against | B．on | C．towards | D．beyond |
I’m moving to the countryside because the air there is much fresher than ______ in the city.
| A．ones | B．one | C．that | D．those |
_____________ that I couldn’t be absorbed in the work.
| A．They made so many noise | B．So loudly they talked |
| C．It was so noise outside | D．Such a loud noise did they make |
The result of the experiment was very good, ___________ we hadn’t expected.
| A．as | B．that | C．which | D．what |
. —— What can I do for you?
——I’d like to buy a gift for my mother’s birthday, one at _________ proper price but of ___________ use and it’d better be __________ surprise.
| A．the; /; a | B．the; a ; / | C．a; the; / | D．a; / ; a |